Chemistry revision 0.0 / 5 ? ChemistryCrude oil, cracking and hydrocarbonsGCSEWJEC Created by: Abbie.w.Created on: 09-02-21 10:18 What is crude oil? Crude oil is a mixture of hydrocarbons 1 of 20 What happens in Fractional distillation? Fractional distillation separates a mixture into several different parts, called fractions. 2 of 20 What is a hydrocarbon? A compound found in crude oil containing almost only hydrogen and carbon 3 of 20 What is the name given to hydrocarbons with all single bonds Alkane 4 of 20 What is the name given to hydrocarbons with one double bond Alkene 5 of 20 What is the formula to work out how many hydrogens and carbons in alkenes CnH(2n+2) 6 of 20 Are alkanes saturated or unsaturated? Saturated 7 of 20 What are the elements needed for a fire? Fuel, Heat, Oxygen 8 of 20 What would happen if you took away one of the elements from a fire? The fire would go out 9 of 20 What does sand remove from a fire? Oxygen 10 of 20 What is a fraction? A substance separated from crude oil that has a similar boiling point 11 of 20 What does this process rely on to separate the different fractions? Different boiling points 12 of 20 What is combustion? combustion is a rapid reaction between a substance and oxygen that releases heat and light energy. 13 of 20 Is combustion an endothermic reaction or an exothermic reaction? Exothermic reaction 14 of 20 How do you test for alkenes? Bromine water is normally orange-brown in colour but becomes colourless when added to an Alkene. 15 of 20 What is an alane with 3 carbon atoms called? Propane 16 of 20 What is the scientific name for plastic? Polymer 17 of 20 What is a polymer? A polymer is a substance of high relative formula mass, made up of small repeating units. 18 of 20 Is ethene a monomer or polymer? Monomer 19 of 20 How would you draw a polymer? 1. Draw the structure of the monomer but use C–C instead of C=C. 2. Draw brackets around the structure with a long bond passing through each one. 20 of 20
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